Minimum Contacts Explained

International Shoe replaced Pennoyer v. Neff, 95 U.S. 714 (1877), and its rigid territorial rule of physical presence with a contacts-based standard. The Court held that due process requires only that the defendant "have certain minimum contacts with [the forum] such that the maintenance of the suit does not offend traditional notions of fair play and substantial justice." Int'l Shoe Co. v. Washington, 326 U.S. 310, 316 (1945). The quoted phrase is not a separate test; it is the constitutional purpose that the contacts inquiry serves.

Two structural points control everything after that. First, the relevant contacts are the defendant's own contacts with the forum state, not with a plaintiff who happens to live there. Walden v. Fiore, 571 U.S. 277 (2014), reversed jurisdiction in Nevada over a Georgia officer who seized cash from Nevada-bound travelers because his only link to Nevada ran through the plaintiffs. Second, the required quantum of contacts varies inversely with the connection between contacts and claim. International Shoe itself sketched the sliding scale that later became the specific/general divide.

The right is personal and waivable. Personal jurisdiction is an individual liberty interest, not a structural limit, so a defendant can consent to it or forfeit the objection by failing to raise it. Ins. Corp. of Ireland v. Compagnie des Bauxites de Guinee, 456 U.S. 694 (1982); Fed. R. Civ. P. 12(b)(2), 12(h)(1).

Use three steps, in order. Skipping the first two and jumping to fairness is the single most common exam error.

Step one is purposeful availment: the defendant must have "purposefully avail[ed] itself of the privilege of conducting activities within the forum State, thus invoking the benefits and protections of its laws." Hanson v. Denckla, 357 U.S. 235, 253 (1958). Contacts that are random, fortuitous, attenuated, or the product of a third party's unilateral activity do not count. World-Wide Volkswagen Corp. v. Woodson, 444 U.S. 286 (1980), is the paradigm: a New York retailer and regional distributor did not avail themselves of Oklahoma merely because a buyer drove an Audi there and crashed.

Step two is relatedness: the suit must "arise out of or relate to" the defendant's forum contacts. Step three is reasonableness. If the plaintiff carries steps one and two, the defendant may still defeat jurisdiction by making a "compelling case" that other factors render suit unreasonable. Burger King Corp. v. Rudzewicz, 471 U.S. 462, 477 (1985). The five factors are the burden on the defendant, the forum state's interest, the plaintiff's interest in convenient and effective relief, the interstate judicial system's interest in efficiency, and the shared interest of the states in substantive social policies. World-Wide Volkswagen, 444 U.S. at 292. Defendants almost never win on reasonableness alone; the notable exception is Asahi Metal Industry Co. v. Superior Court, 480 U.S. 102 (1987), where the remaining dispute was indemnification between two foreign corporations and California's interest was minimal.

In contract cases, a contract with a forum resident is not by itself enough. You look at prior negotiations, contemplated future consequences, the terms of the deal, and the parties' actual course of dealing. Burger King, 471 U.S. at 479. A Michigan franchisee who negotiated with a Florida franchisor, agreed to a twenty-year relationship centered in Florida, and accepted a Florida choice-of-law clause was subject to Florida jurisdiction. Compare McGee v. International Life Insurance Co., 355 U.S. 220 (1957), where a single life insurance policy solicited in California sufficed, with Hanson, where a Delaware trustee's contacts existed only because the settlor moved to Florida.

In intentional tort cases, use the Calder "effects test." A Florida-based writer and editor were subject to California jurisdiction for a libel about a California actress because they expressly aimed conduct at California and knew the brunt of the injury would be felt there. Calder v. Jones, 465 U.S. 783 (1984). Walden narrows this: foreseeable injury to a forum plaintiff is not enough; the defendant's conduct must connect him to the forum itself.

Stream of commerce remains unsettled. Asahi split 4-4 between Justice O'Connor's "stream of commerce plus" (requiring additional conduct such as designing for the forum market, advertising there, or establishing channels for customer advice) and Justice Brennan's view that awareness the product would reach the forum through regular distribution suffices. J. McIntyre Machinery, Ltd. v. Nicastro, 564 U.S. 873 (2011), produced no majority either, though the plurality demanded targeting of the specific state. Some state courts still follow the broader approach of Gray v. American Radiator & Standard Sanitary Corp., 176 N.E.2d 761 (Ill. 1961). Say on an exam that the doctrine is unresolved and argue both frameworks.

Ford Motor Co. v. Montana Eighth Judicial District Court, 592 U.S. 351 (2021), resolved a long-running dispute and rejected any strict causation requirement. Ford argued that because it did not design, manufacture, or first sell the specific vehicles in Montana and Minnesota, the plaintiffs' claims did not arise from its in-state activity. The Court held that the phrase "arise out of or relate to" is disjunctive: "relate to" contemplates connections that do not require proof of but-for causation. Ford's extensive advertising, dealership network, and parts and service business in those states, aimed at the same vehicle models, sufficed.

Ford did not abolish the limit. Bristol-Myers Squibb Co. v. Superior Court, 582 U.S. 255 (2017), still bars jurisdiction where nonresident plaintiffs sue over injuries with no forum connection, even though the defendant sold the same drug in the forum to others. The line is that the defendant's forum contacts must relate to the plaintiff's own claim, not merely to the defendant's general business. Read Bristol-Myers and Ford together: same-product sales in the forum help a resident plaintiff injured in the forum and do nothing for a nonresident injured elsewhere.

General jurisdiction permits any claim, related or not, but only where the defendant is "essentially at home." Goodyear Dunlop Tires Operations, S.A. v. Brown, 564 U.S. 915 (2011). For an individual, that is the domicile. For a corporation, the paradigm forums are the state of incorporation and the principal place of business. Daimler AG v. Bauman, 571 U.S. 117 (2014), rejected the theory that substantial, continuous in-state sales suffice, and BNSF Railway Co. v. Tyrrell, 581 U.S. 402 (2017), confirmed that thousands of miles of track and thousands of employees in Montana did not make the railroad at home there.

The only recognized exceptional case is Perkins v. Benguet Consolidated Mining Co., 342 U.S. 437 (1952), where a Philippine company relocated its wartime operations to Ohio, making Ohio a surrogate headquarters. Treat Perkins as a narrow escape hatch, not a general test. Note also that Helicopteros Nacionales de Colombia, S.A. v. Hall, 466 U.S. 408 (1984), found purchases and training trips in Texas insufficient even under pre-Goodyear law.

Three doctrines let a court exercise jurisdiction without running International Shoe. Tag jurisdiction survives: personal service on a defendant physically present in the forum, even transiently, supports general jurisdiction. Burnham v. Superior Court, 495 U.S. 604 (1990), upheld it unanimously in judgment, though the Justices split on rationale between historical pedigree (Scalia) and contemporary fairness (Brennan).

Consent is the second route. Parties can consent by forum-selection clause, by appearance, or by failing to preserve a Rule 12(b)(2) objection. Mallory v. Norfolk Southern Railway Co., 600 U.S. 122 (2023), revived consent-by-registration, upholding a Pennsylvania statute that conditioned business registration on amenability to suit on any claim. Check whether the forum's registration statute actually contains that condition; most do not.

Third, in rem and quasi in rem jurisdiction is no longer a workaround. Shaffer v. Heitner, 433 U.S. 186 (1977), held that all assertions of state-court jurisdiction must satisfy the International Shoe standard, so attaching property unrelated to the claim will not do the work it did under Pennoyer.

Constitutional minimum contacts is only half the question. In federal court, Federal Rule of Civil Procedure 4(k)(1)(A) generally borrows the personal jurisdiction reach of the state where the district court sits, so you apply the forum state's long-arm statute first. Some long-arms are enumerated-act statutes listing specific conduct; others, like California's, extend to the constitutional limit. If a state long-arm is enumerated and the conduct does not fit an enumerated category, the analysis ends there and you never reach due process.

Rule 4(k)(2) is the federal-claim gap-filler: for claims arising under federal law, service establishes jurisdiction over a defendant not subject to jurisdiction in any state's courts, so long as jurisdiction is consistent with the Constitution and federal law. Here the contacts you aggregate are contacts with the United States as a whole.

On an exam, write in this order: basis for service or long-arm authorization, then general jurisdiction (usually a quick paragraph disposing of it under Daimler), then specific jurisdiction with purposeful availment, relatedness, and reasonableness as separate headings. Raise Burnham, consent, or Mallory only when the facts flag them.